811 Main (formerly BG Group Place and MainPlace) is a 630 ft (192 m) tall skyscraper in Downtown Houston, Texas.

[2] When it was completed, BG Group Place became the 15th tallest building in Houston and features a skygarden on the 39th floor.

The naming was done when BG Group Plc became an anchor tenant and leased 164,000sq ft of space.

[4] The primary monument & all core signage for the facility was built by Ad Display Sign Systems.

The 10-foot ceilings (a foot higher than the modern standard) allow in more sunlight, cutting the need for electric lights.